Oprofile是一种细粒度的工具，可以为指令集或者为函数、系统调用或中断处理例程收集采样。
OProfile is fine-grained and can collect samples for a set of instructions, or for function, system call, or interrupt handlers.
在该例程中收集到的采样数量与处理器在执行指令时所花的时间成正比。
The number of samples collected in the routine is proportional to the the time spent by the processor in executing instructions.
在该例程中收集到的采样数量与处理器在执行指令时所花的时间成正比。
The number of samples collected in the routine is proportional to the the time spent by the processor in executing instructions.
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